ELEVEN SUBSTANTIAL DIFFERENCES
BETWEEN MASSACHUSETTS'
TRAFFIC LAWS AND
PROVISIONS IN THE UNIFORM VEHICLE CODE
AND THE LAWS OF MOST OTHER STATES

included 1983 by Edward Kearney of the
National Council on Uniform Traffic Laws and Ordinances
in a letter to John S. Allen

1. Section 11-301 of the Uniform Vehicle Code requires drivers to be in the right lane
or near the right edge of the roadway only when they are "proceeding at less than the
normal speed of traffic." The sign used to remind drivers of this requirement usually
reads, "Slower moving traffic keep right." Appropriate exceptions are made for
slower-moving drivers who desire to pass or turn left. By comparison, Mass. Ann. Laws Ch.
89, § 4. requires the driver of "a slow moving vehicle . . . ascending a grade .
. . [to] keep said vehicle in the extreme right-hand lane . . . " and § 4B requires
all drivers on all ways to be in the "lane nearest the right side" unless
passing another vehicle, preparing for a turn or unless the right lane is designated for
purposes "other than ordinary travel." The sign used to post this latter
regulation would be, "Keep Right Except To Pass." When there are two or more
lanes for traffic moving in the same direction, there are many instances (in addition to
turning left or passing) when being in the left lane would be reasonable and safe. Some of
these are:

When there is no other vehicle on the roadway for several miles.

When the right lane is bumpy and the left lane is smooth.

When traffic is very congested.

When many cars are in the right lane and very few are in the left lane.

When approaching a merging point where cars entering the roadway may
need to use the right lane.

When the right lane does not go in the direction the driver wishes to
go.

In none of these instances would Mass. § 4B
allow a driver to use the left lane, while the UVC would subject only to the rule
requiring slower-moving traffic to be in the right lane. The National Committee found the
rule requiring drivers to be in the right lane on one-way roadways, or where there is more
than one lane for traffic moving in the same direction, to be unworkable in 1934. This
rule can be found in the laws of only four other states and is criticized further in
conjunction with the Michigan law on pages 273-74 of Traffic Laws Annotated (1972).

2. Section 4
of Mass. Ann. Laws Ch. 89 requires drivers to remain on the right side of any highway
at an intersection where the view is obstructed unless this rule is altered by pavement
markings or unless a position on the right side would be unsafe or impracticable. UVC §
11-301(a) generally requires drivers to be on the right side of the roadway at all places
and creates appropriate exceptions to this rule. One important exception is for one-way
roadways. Another allows passing, but passing is not allowed at any intersection where
traffic moves in two directions -- not just those where the view is obstructed as under §
4. See UVC § 11-306. Another difference is that the Massachusetts rule would apply on a
one-way roadway while the UVC rule would riot. That is, even though on a one-way roadway,
drivers in Massachusetts technically are required to remain on the right side of the
roadway at obstructed intersections. The National Committee deleted a rule comparable to
this Massachusetts law from the Uniform Vehicle Code in 1930. See Traffic Laws Annotated
264 and 300 (1972).

3. Prior to 1968, the Uniform Vehicle Code had two rules for vehicles approaching an
"uncontrolled" intersection. The familiar rule requiring the driver on the left
to yield to the vehicle on its right was modified by a second rule requiring a driver to
yield to a vehicle which had already entered the intersection. The second rule was deleted
from UVC § 11-401 in 1968 but is still contained in Mass. Ann. Laws Ch.
89 § 8. When two drivers approach an intersection at approximately the same time,
they need one rule, not two. In addition, at least one state supreme court held the two
rules unconstitutional in a civil action because they conflicted with each other.

4. & 5. UVC § 11-405 would require a driver to yield the right of way to an
ambulance or a fire truck using flashing red lights and a siren; a police vehicle need use
only a siren. Mass.
Ann, Laws Ch. 89, § 7 gives the right of way to certain emergency vehicles without
requiring any special audible or visual signals. The UVC rule specifically requires
pulling over and stopping. Mass.§ 6A specifically requires only streetcars to stop (not clear of
any intersection as in the UVC) and only for fire vehicles.

6. UVC § 11-602(b) prohibits making a U turn on any curve or hillcrest where the
visibility is restricted within 500 feet. Mass. Rules & Regs, for Driving on State
Highways § 23 (Jan. 1971) bans U turns only when a sign prohibits such turns. See UVC §
11-201(a) requiring drivers to comply with all official traffic control devices.

7. Speed limits in nine states, including Massachusetts, are "prima facie."
That is, evidence showing that a driver exceeded the posted or a statutory limit
constitutes only prima facie evidence that his speed was unlawful. Under the Uniform
Vehicle Code and the laws of 33 jurisdictions, all speed limits are "absolute"
so that a rate of speed in excess of a posted or statutory limit is unlawful. Nine states
have both kinds of speed limits, Compare UVC §§ 11-801 and 11-801.1 with Mass. Ann. Laws Ch.
90, § 17.

8. UVC § 11-1202 provides that bicyclists have the same rights and
duties as the drivers of vehicles "except as to those provisions of this act which by
their nature" cannot be applicable and except as to special rules for bicycles. Mass. Ann. Laws Ch. 85, § 11B
requires bicyclists to conform with traffic rules but does not expressly give them the
same rights. Massachusetts would not require compliance with rules that are not obviously
and reasonably applicable.

Note: This Massachusetts law requires bicyclists to ride single file. This rule differs
substantially from UVC § 11-1205(b) allowing riding two abreast. This Massachusetts
provision apparently was overlooked in Traffic Laws Annotated and should be regarded as a
12th substantial difference.

9.. UVC § 11-202(c)(1) on the meaning of a steady red signal requires drivers to stop
before entering the crosswalk so pedestrians can use it. Mass. Rules & Regs. for
Driving on State Highways art. IV, § 10(d) would allow drivers to stop on the crosswalk
unless a stop line is installed in advance thereof.

10.. UVC § 11-202(b)(1) allows drivers to enter an intersection against a steady
yellow signal. It means caution because either a red signal will soon be shown or a
related green signal is being ended. But Mass, Rules & Regs. for Driving on State
Highways art IV, § 10(c), instructs drivers to stop unless so close to the intersection
that a stop cannot be made in safety. The Massachusetts rule was deleted from the Uniform
Vehicle Code in 1944 and new is in effect in only nine states other than Massachusetts.
With the yellow interval lasting from 3 to 8 seconds, it is often safe and reasonable to
enter the intersection even though it may also be safe to stop.

11. UVC § 11-202(a)(2) requires drivers proceeding on any green
arrow to yield the right of way to all traffic within the intersection and to any
pedestrian in an adjacent crosswalk. Mass. Rules & Regs. for Driving on State Highways
art. IV, § 10(b) requires drivers proceeding on certain green arrows to yield only to
pedestrians in a marked crosswalk (and not also to pedestrians within an unmarked
crosswalk or those legally within the intersection as would the UVC) and only to
"vehicles proceeding from another direction on a green indication."

SOME IMPORTANT RULES OF THE ROAD THAT HAVE APPARENTLY NOT BEEN ADOPTED IN MASSACHUSETTS

1. UVC § 11-402 requiring a driver making a left turn to yield the right of way to a
vehicle approaching from the opposite direction.

2. UVC §§ 10-102 to 10-104 requiring drivers in a crash to stop, identify themselves,
and aid the injured. See also UVC § 10-106 requiring immediate notice to the police of
all serious crashes.

10. Massachusetts' traffic laws do not indicate where they apply. Under UVC § 15-101,
rules of the road apply in all municipalities and, under UVC § 11-101, they generally
apply only on the highways. The rules and regulations in Massachusetts adopted by the
Department of Public Works apply only on state highways. Massachusetts should have one
statewide traffic code containing rules for all users on all highways.